CN111649075B - Heat insulation coupler for torque calibration - Google Patents
Heat insulation coupler for torque calibration Download PDFInfo
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- CN111649075B CN111649075B CN202010677584.1A CN202010677584A CN111649075B CN 111649075 B CN111649075 B CN 111649075B CN 202010677584 A CN202010677584 A CN 202010677584A CN 111649075 B CN111649075 B CN 111649075B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
Abstract
The invention discloses a heat insulation coupling for torque calibration, and belongs to the technical field of torque measurement calibration. The invention mainly comprises a convex torque transmission shaft, a heat insulation groove, a combination disc, a concave torque transmission shaft, a heat insulation sleeve and a heat insulation bolt group. When the torque is transmitted, the torque is converted into pressure to the heat insulation groove in the groove of the convex torque transmission shaft and is transmitted to the combination plate, then the pressure is transmitted to the other heat insulation groove through the combination plate and is transmitted to the concave torque transmission shaft, the heat insulation groove is free from shearing force and torsion, and the heat insulation groove for transmitting the torque through positive pressure obtains a larger torque transmission range compared with a mode that the heat insulation material is subjected to the shearing force and the torsion for transmitting the torque. Through the torque transmission mode, the bolt group for connection is free from shear stress, and the heat insulation materials such as resin materials and the like with good heat insulation effect, such as nylon, glass fiber reinforced plastics and the like, are selected according to the actual load and the temperature range, so that the heat insulation effect is optimal. The invention overcomes the defects of the traditional structure and can realize the aims of unlimited torque value transmission, outstanding heat insulation effect and the like.
Description
Technical Field
The invention relates to a heat insulation coupling for torque calibration, and belongs to the technical field of torque measurement calibration.
Background
At present, the high and low temperature torque calibration device in China is mostly obtained by improving the traditional dead weight type torque calibration device, namely, a warm box is additionally arranged on the dead weight type torque calibration device, so that a standard torque value is provided for a standard torque meter or a torque sensor to be detected under a certain temperature condition, and the aim of carrying out torque measurement calibration under the high and low temperature conditions is fulfilled. One of the typical characteristics of most of the existing high-temperature and low-temperature torque calibration devices is that an incubator is arranged between a driving shaft and a driven shaft of a dead-weight torque calibration device. The installation position of the incubator inevitably has the following three problems: first, heat in the incubator causes thermal loss along driving shaft and driven shaft transmission, influences the inside heat balance degree of being surveyed the appearance ware to influence the degree of accuracy of experimental temperature data. Secondly, the heat in the incubator is transferred to the main engine of the dead-weight type torque calibration device along the driving shaft and the driven shaft, and due to the thermal expansion characteristic of the metal material, the diameter of the supporting shaft and the total arm length of the torque lever can be influenced by the high temperature or the low temperature leaked in the incubator, and meanwhile, the applicable environment temperature condition of the standard device is influenced. Thirdly, the heat in the incubator is transferred to the outside of the incubator along the driving shaft and the driven shaft, so that the heat balance time of the measured instrument and the time for the temperature in the incubator to reach the given temperature can be prolonged, and the resource loss and waste are caused.
In order to reduce the loss of the temperature in the incubator along the driving shaft and the driven shaft, improve the control precision of the temperature in the high-low temperature torque measurement calibration test, reduce the thermal expansion of metal materials caused by temperature change, reduce the loss and waste of resources and reduce the measurement uncertainty of the recurring torque value of a standard torque generating device, the most feasible and effective method is to serially connect a heat insulation coupler on the original driving shaft and the driven shaft, namely the joint of the incubator and the shaft.
The heat insulation coupling is a core product developed by utilizing a poor heat conductor material, and realizes high and low temperature separation while torque is transmitted by utilizing a heat insulation material. Compared with the traditional coupler, the high-low temperature coupler has the advantages of small torque transmission loss, good heat insulation performance and the like.
A thermal-insulated shaft coupling for thermal-insulated function, its traditional structure is based on the flange structure of taking the neck, insert thermal insulation material between two ring flanges, insert the heat insulating sheet in each bolt and ring flange junction, insert the heat insulating sheet between each nut and ring flange, this kind of structure has the restriction that receives thermal-insulated material performance transmission torque value size is limited, the inside temperature of incubator can be transmitted to the incubator outside through the bolt on the thermal-insulated shaft coupling ring flange, for guaranteeing thermal-insulated effect to each heat insulating sheet machining precision high grade problem.
The invention relates to a Chinese patent (CN110031148A) and provides a method and a device for calibrating a torque sensor in a high-low temperature environment, wherein the method comprises the steps of measuring the coaxiality of the torque sensor to be measured and the initial position of a transmission shaft by using a laser centering instrument, and predicting the coaxiality at any temperature within the range of +/-100 ℃ by using a function polynomial between the coaxiality and the temperature obtained through simulation research, thereby calculating the influence of the change of the coaxiality on the torque measurement and correcting the final measurement error. However, the device has no high-low temperature coupling connected in series on the driving shaft and the driven shaft, and has corresponding limitations. The invention patent (CN106321673A) in china proposes a heat-insulating and shock-absorbing sliding rod type universal coupling, which adopts heat-insulating materials to insulate heat, adopts a sliding rod structure to transmit torque universally, and can reduce the influence of coaxiality error while realizing heat insulation in the transmission of torque. However, the sliding rod structure can generate loss of torque transmission due to friction between components in torque transmission, and is not suitable for a torque calibration device with high accuracy requirement in magnitude transmission. At the same time, the complexity of the construction of the slide rod also increases the measurement uncertainty of the torque calibration device. The utility model discloses a chinese utility model patent (CN202867606U), provided a thermal-insulated formula ball cage shaft coupling, adopted to connect thermal-insulated gasket to insulate against heat between the ring flange on the basis of traditional hubbed flange. However, this structure has a problem that a transmittable torque value is small and heat is transmitted between bolts.
Disclosure of Invention
The invention discloses an insulated coupling for torque calibration, which aims to: improve the thermal-insulated part among the traditional high low temperature moment of torsion calibrating device, still have advantages such as moment of torsion value transmission size is not restricted, thermal-insulated effectual when overcoming high low temperature moment of torsion calibrating device traditional structure shortcoming.
The purpose of the invention is realized by the following technical scheme.
The invention discloses a heat insulation coupler for torque calibration, which mainly comprises a convex torque transmission shaft, a heat insulation groove, a combination disc, a concave torque transmission shaft, a heat insulation sleeve and a heat insulation bolt group.
Protruding biography torsion shaft is cylindrical structure, has the evagination link in the one end of axle, according to transmission moment of torsion size, and the many square axles of suitable size are chooseed for use to the evagination link for be connected a thermal-insulated shaft coupling that is used for the moment of torsion calibration with high low temperature moment of torsion calibrating device, have the bolt hole along a week of axle, the other one end of axle is fluted, is used for linking to each other protruding biography torsion shaft and heat-proof slot, transmission moment of torsion.
Preferably, according to the magnitude of the transmission torque, the outer convex connecting end of the convex transmission torsion shaft is a multi-square shaft, and the multi-square shaft comprises a square shaft and a hexagonal shaft.
The heat insulation groove is of a groove-shaped structure or a plate-shaped structure, is made of resin materials and is selected according to the torque and the temperature. Used for heat insulation and transmitting torque values.
Preferably, the heat insulation groove of the groove type structure is composed of groove type structural members, and bolt holes are formed in each surface of the groove and used for fixedly mounting the heat insulation groove and the combination disc. The heat insulation groove of the plate-shaped structure consists of three plates, and bolt holes are formed in the surfaces of the plates and used for fastening and mounting the plates forming the heat insulation groove and the combination disc. The size of the heat insulation groove is adjusted according to the size of the square shaft, the heat insulation groove penetrates in the groove of the convex transmission torsion shaft and is connected with the convex transmission torsion shaft, and the heat insulation groove penetrates in the groove of the concave transmission torsion shaft and is connected with the concave transmission torsion shaft.
The combined disc is used for transmitting torque and is of a disc-shaped symmetrical structure, two convex edges are symmetrically arranged on two surfaces of the disc respectively, the combined disc is connected with a heat insulation groove through the convex edges, the heat insulation groove is sleeved on the convex edges of the combined disc, bolt holes are formed in the convex edges and used for fastening the combined disc and the heat insulation groove, and bolt holes used for being connected with and fixing the convex transmission torsion shaft and the concave transmission torsion shaft are formed in the disc surface.
Concave biography torsion bar is cylinder type structure for the transmission moment of torsion, and the one end of concave biography torsion bar is fluted and is used for linking to each other with the heat-insulating groove, and the heat-insulating groove is installed in the recess of concave biography torsion bar, and the other one end of concave biography torsion bar is equipped with and is used for linking to each other with high low temperature moment of torsion calibrating device and passes and turn round the recess.
Preferably, the torque transmission grooves include square grooves and hexagonal grooves.
The heat insulation sleeve is of an annular structure and is used for heat insulation, and heat insulation materials are selected according to actual load and temperature ranges. The heat insulation sleeve is sleeved outside the stud of the bolt of the heat insulation bolt group to insulate the connection of the heat insulation bolt with the convex transmission torsion shaft, the combination disc and the concave transmission torsion shaft, so that the overall heat insulation effect of the heat insulation coupler for torque calibration is improved.
The heat insulation bolt group is of a bolt structure and is used for connecting the convex transmission torsion shaft, the joint disc and the concave transmission torsion shaft, the connection function and the heat insulation function are achieved, and the material of the heat insulation bolt is selected according to the actual load and the temperature range.
Preferably, the convex edge of the combination disc is connected with the convex torsion transmission shaft and the concave torsion transmission shaft through the heat insulation groove to transmit torque, the stress of the heat insulation groove is pressure, and the range of the transmitted torque is larger.
Preferably, the convex edge of the combination disc is connected with the convex transmission torsion shaft and the concave transmission torsion shaft through the heat insulation groove to transmit torque, the bolt group for connecting the convex transmission torsion shaft and the concave transmission torsion shaft is only subjected to pretightening force, and the heat insulation bolt group is adopted to improve the heat insulation effect.
Preferably, a heat insulation sleeve is arranged outside the heat insulation bolt group to isolate the contact between the heat insulation bolt group and the combination disc, so that the heat insulation effect is improved.
Preferably, the thermal insulation slot transmitting torque by positive pressure obtains a greater range of torque transmission than the way the torque is transmitted by shear force and torsion force through the thermal insulation material.
Preferably, the heat insulation material of the heat insulation sleeve and the heat insulation bolt set is preferably resin material, including nylon and glass fiber reinforced plastics.
When the torque is transmitted, the torque is converted into pressure to the heat insulation groove in the groove of the concave torsion transmission shaft and transmitted to the combination disc, then the pressure is transmitted to the other heat insulation groove through the combination disc and transmitted to the convex torsion transmission shaft, the pressure of the heat insulation groove on the convex torsion transmission shaft is converted into the torque, the heat insulation groove is not subjected to shearing force and torsion, and the heat insulation groove for transmitting the torque through positive pressure obtains a larger torque transmission range compared with a mode of transmitting the torque through the heat insulation material in a way of receiving the shearing force and the torsion. Through above torque transfer mode, connect the bolt group that the concave torsion axle that passes, combine dish, protruding torsion axle used not receive shear stress, select thermal-insulated effectual thermal-insulated bolt for it is thermal-insulated to reach the best effect, and concrete thermal-insulated and torque transfer mode as follows: the bolt group for connecting the convex transmission torsion shaft and the concave transmission torsion shaft is only subjected to pretightening force, and the heat insulation bolt group is adopted to isolate the heat transmission along the heat insulation bolt group. The isolated protruding direct contact who passes between twist shaft and the combination dish of heat-insulating groove, isolated heat are along the protruding transmission between twist shaft and the combination dish of passing, and the isolated concave direct contact who passes between twist shaft and the combination dish of heat-insulating groove, isolated heat are along the transmission between concave twist shaft of passing and the combination dish. And a heat insulation sleeve is arranged outside the heat insulation bolt group, so that the heat insulation bolt group is isolated from being contacted with the combination disc, and the heat is isolated from being transferred between the heat insulation bolt group and the combination disc. At the moment, under the condition of transmitting larger torque, the heat transmitted by the heat insulation coupling for torque calibration approaches to zero, namely, the heat insulation achieves the best effect, and the temperature control precision in high-temperature and low-temperature torque measurement calibration is improved.
Has the advantages that:
1. the invention discloses a heat insulation coupler for torque measurement, which improves a heat insulation part in a traditional high-low temperature torque calibration device, can isolate heat in a high-low temperature torque measurement middle temperature box from being transferred to the outside of the temperature box, and improves the temperature control precision in high-low temperature torque measurement calibration.
2. The heat insulation coupling for torque measurement disclosed by the invention can isolate heat in a high-temperature and low-temperature torque measurement middle temperature box from being transferred to the outside of the temperature box, prevent the actual size of a force arm lever from being influenced by the thermal expansion of a metal material caused by temperature change, and improve the accuracy of a standard torque value.
3. The heat insulation coupling for torque measurement disclosed by the invention can isolate the heat in the high-temperature and low-temperature torque measurement middle temperature box from being transferred to the outside of the middle temperature box, and reduces the waste of resources.
4. The invention discloses a heat insulation coupling for torque measurement, which adopts a combined disc torque transmission design, can obtain a larger torque transmission range while isolating temperature transmission, and can carry out convenient and flexible structural design and capacity expansion according to different torque ranges.
5. The invention discloses a heat insulation coupling for torque measurement, which adopts a combined disc torque transmission design, wherein a heat insulation groove is stressed, and the service life of the heat insulation groove is prolonged.
6. The invention discloses a heat insulation coupler for torque measurement, which adopts a combined disc torque transmission design, wherein a connecting bolt group of a convex torque transmission shaft and a concave torque transmission shaft is not subjected to shearing force, and the material of the connecting bolt group can be selected as a heat insulation material, so that the heat insulation effect of the device is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of an insulated coupling for torque measurement.
Fig. 2 is a schematic diagram showing the overall structure of an insulation groove of an insulation coupling for torque measurement, in which fig. 2a is a front view of the insulation groove having a groove structure, fig. 2b is a left view of the insulation groove having a groove structure, fig. 2c is a front view of the insulation groove having a plate structure, and fig. 2d is a left view of the insulation groove having a plate structure.
Fig. 3 is a schematic view showing the overall structure of a coupling disc of an adiabatic coupling for torque measurement, in which fig. 3a is a front view and fig. 3b is a left side view.
Wherein, the device comprises a 1-convex torsion transmission shaft, a 2-heat insulation groove, a 3-combination disc, a 4-concave torsion transmission shaft, a 5-heat insulation sleeve and a 6-heat insulation bolt group.
Detailed Description
For a better understanding of the objects and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1:
as shown in fig. 1, 2 and 3, the heat insulation coupling for torque measurement disclosed in the present embodiment includes a male torque transmission shaft 1, a heat insulation groove 2, a coupling disc 3, a female torque transmission shaft 4, a heat insulation sleeve 5, and a heat insulation bolt group 6.
Protruding biography torsion shaft 1 is cylindrical structure, has the evagination link in the one end of axle, according to transmission moment of torsion size etc. the hexagonal axle is chooseed for use to the evagination link for be connected a thermal-insulated shaft coupling that is used for the moment of torsion calibration with high low temperature moment of torsion calibrating device, there is the bolt hole along a week of axle, and the other one end of axle is fluted, is used for linking to each other protruding biography torsion shaft 1 and heat-proof slot 2, transmission moment of torsion.
The heat insulation groove 2 is of a groove structure or a plate structure, is made of resin materials and is selected according to the torque and the temperature. Used for heat insulation and transmitting torque values. The heat insulation groove 2 of the groove type structure is composed of a groove type structure, and bolt holes are formed in each surface of the groove and used for fixedly mounting the heat insulation groove 2 and the combination disc 3. The heat insulation groove 2 of a plate-shaped structure is composed of three plates, and bolt holes are formed in the surfaces of the plates and used for fixedly mounting the plates forming the heat insulation groove 2 and the combination disc 3. The size of heat-insulating groove 2 is designed and changed by the size of protruding biography twist axle 1, and heat-insulating groove 2 wears to pass in the recess of protruding biography twist axle 1 and link to each other with protruding biography twist axle 1, and heat-insulating groove 2 wears to pass in the recess of concave biography twist axle 4 and link to each other with concave biography twist axle 4.
The combined disc 3 is of a disc-shaped symmetrical structure and used for transmitting torque, the two symmetrical surfaces of the disc are respectively provided with a convex edge, the combined disc 3 is connected with the heat insulation groove 2 through the convex edge, the heat insulation groove 2 is sleeved on the convex edge of the combined disc 3, the convex edge is provided with bolt holes for fastening the combined disc 3 and the heat insulation groove 2, and the disc surface is provided with bolt holes for connecting and fixing the convex torque transmission shaft 1 and the concave torque transmission shaft 4.
Concave biography is turned round axle 4 and is the cylinder type structure for the transmission moment of torsion, the one end of concave biography is turned round axle 4 fluted and is used for linking to each other with heat-proof tank 2, and heat-proof tank 2 is installed in the recess of concave biography is turned round axle 4, and there is the biography and turns round recess concave other one end of 4, and the hexagonal recess etc. can be chooseed for use to the biography is turned round the recess for use, is used for linking to each other with high low temperature moment of.
The heat insulation sleeve 5 is of an annular structure and used for heat insulation, the materials are heat insulation materials such as resin materials including nylon and glass fiber reinforced plastics are selected according to actual load and temperature range, the heat insulation sleeve 5 is sleeved outside a stud of a bolt of the heat insulation bolt group 6, the heat insulation bolt is isolated from being connected with the convex transmission torsion shaft 1, the combination disc 3 and the concave transmission torsion shaft 4, and the overall heat insulation effect of the heat insulation coupler used for torque calibration is improved.
The heat insulation bolt group 6 is of a bolt structure and is used for connecting the convex torque transmission shaft 1, the joint disc 3 and the concave torque transmission shaft 4, and the bolt group is made of heat insulation materials such as resin materials including nylon, glass fiber reinforced plastics and the like according to actual load and temperature range, so that the heat insulation bolt group plays a role in connection and heat insulation.
According to the different sizes of the torque values required to be transmitted, the design of each part can be changed according to the requirements of the sizes of the torque values required to be transmitted.
As shown in fig. 1, 2 and 3, the working method of the heat-insulating coupling for torque measurement disclosed in this embodiment is as follows: the convex edge of the combined disc 3 is connected with the convex torque transmission shaft 1 and the concave torque transmission shaft 4 through the heat insulation groove 2, the stress of the heat insulation groove 2 is pressure, the torque transmission is realized, and the material of the heat insulation groove 2 is not subjected to shearing force and torsion, so that large torque can be transmitted. The bolt group for connecting the convex torsion transmission shaft 1 and the concave torsion transmission shaft 4 is only subjected to pretightening force, and the heat insulation bolt group 6 made of heat insulation materials is adopted to isolate the heat transmission along the heat insulation bolt group 6. The heat insulation groove 2 isolates the convex torsion shaft 1 from the combination disc 3, the heat is isolated from the convex torsion shaft 1 and the combination disc 3, the heat insulation groove 2 isolates the concave torsion shaft 4 from the combination disc 3, and the heat is isolated from the concave torsion shaft 4 from the combination disc 3. And a heat insulation sleeve 5 is arranged outside the heat insulation bolt group 6, so that the heat insulation bolt group 6 is isolated from being in contact with the combination disc 3, and the heat is isolated from being transferred between the heat insulation bolt group 6 and the combination disc 3. In this case, the amount of heat transferred by the isolating coupling for torque calibration approaches zero when large torques are transferred.
The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An insulated coupling for torque calibration, characterized by: mainly comprises a convex transmission torsion shaft (1), a heat insulation groove (2), a combination disc (3), a concave transmission torsion shaft (4), a heat insulation sleeve (5) and a heat insulation bolt group (6);
the convex torsion transmission shaft (1) is of a cylindrical structure, an outer convex connecting end is arranged at one end of the shaft, a multi-square shaft with a proper size is selected as the outer convex connecting end according to the size of transmission torque, the outer convex connecting end is used for connecting a heat insulation coupler for torque calibration with a high-low temperature torque calibration device, a bolt hole is arranged along the circumference of the shaft, and a groove is formed in the other end of the shaft and used for connecting the convex torsion transmission shaft (1) with a heat insulation groove (2) to transmit the torque;
the heat insulation groove (2) is used for insulating heat and transmitting torque values, is of a groove-shaped structure or a plate-shaped structure, is made of resin materials, and selects the material and the size of the heat insulation groove (2) according to the torque and the temperature;
the combined disc (3) is used for transmitting torque and is of a disc-shaped symmetrical structure, two symmetrical convex edges are respectively arranged on two surfaces of the disc, the combined disc (3) is connected with the heat insulation groove (2) through the convex edges, the heat insulation groove (2) is sleeved on the convex edges of the combined disc (3), bolt holes are formed in the convex edges and used for tightly fastening the combined disc (3) and the heat insulation groove (2), and bolt holes used for being connected with and fixed by the convex transmission torsion shaft (1) and the concave transmission torsion shaft (4) are formed in the disc surface;
the concave torsion transmission shaft (4) is of a cylindrical structure and is used for transmitting torque, a groove is formed in one end of the concave torsion transmission shaft (4) and is used for being connected with the heat insulation groove (2), the heat insulation groove (2) is installed in the groove of the concave torsion transmission shaft (4), and a torsion transmission groove used for being connected with the high-low temperature torque calibration device is formed in the other end of the concave torsion transmission shaft (4);
the heat insulation sleeve (5) is of an annular structure and is used for heat insulation, and heat insulation materials are selected according to actual load and temperature ranges; the heat insulation sleeve (5) is sleeved outside a stud of a bolt of the heat insulation bolt group (6) to isolate the connection of the heat insulation bolt with the convex transmission torsion shaft (1), the combination disc (3) and the concave transmission torsion shaft (4), so that the heat insulation effect of the whole heat insulation coupling for torque calibration is improved;
the heat insulation bolt group (6) is of a bolt structure and is used for being connected with the convex transmission torsion shaft (1), the joint disc (3) and the concave transmission torsion shaft (4), the heat insulation effect is achieved while the connection effect is achieved, and materials of the heat insulation bolt are selected according to actual load and temperature range.
2. An insulated coupling for torque calibration as claimed in claim 1, wherein: the heat insulation groove (2) with the groove-shaped structure consists of groove-shaped structural members, and bolt holes are formed in the surfaces of the groove and used for fastening and mounting the heat insulation groove (2) and the combination disc (3); the heat insulation groove (2) with the plate-shaped structure consists of three plates, and bolt holes are formed in the surface of each plate and used for fixedly mounting each plate forming the heat insulation groove (2) and the combination disc (3); the size of heat-insulating groove (2) is adjusted according to the size of many square shafts, and heat-insulating groove (2) are worn and are passed in the recess of twist axle (1) with protruding and pass twist axle (1) and link to each other, and heat-insulating groove (2) are worn and are passed in the recess of twist axle (4) with concave and pass twist axle (4) and link to each other.
3. An insulated coupling for torque calibration as claimed in claim 1, wherein: the convex edge of the combination disc (3) is connected with the convex transmission torsion shaft (1) and the concave transmission torsion shaft (4) through the heat insulation groove (2) to transmit torque, the stress of the heat insulation groove (2) is pressure, and the range of the transmission torque is larger.
4. An insulated coupling for torque calibration as claimed in claim 1, wherein: protruding stupefied of adoption combination dish (3) passes through heat-insulating groove (2) and passes torsion shaft (1) with protruding, concave transmission torsion shaft (4) and link to each other the transmission moment of torsion, and the bolt group of connecting protruding torsion shaft (1), concave torsion shaft (4) of passing only receives the pretightning force, adopts thermal-insulated bolt group (6), improves thermal-insulated effect.
5. An insulated coupling for torque calibration as claimed in claim 1, wherein: and a heat insulation sleeve (5) is arranged outside the heat insulation bolt group (6), so that the heat insulation bolt group (6) is isolated from being contacted with the combination disc (3), and the heat insulation effect is improved.
6. An insulated coupling for torque calibration as claimed in claim 1, wherein: the heat insulation groove (2) for transmitting torque through positive pressure obtains a larger torque transmission range compared with a mode of transmitting torque through heat insulation materials under shearing force and torsion.
7. An insulated coupling for torque calibration as claimed in claim 1, wherein: according to the magnitude of the transmission torque, a multi-square shaft is selected as an outer convex connecting end of the convex transmission torsion shaft (1), and the multi-square shaft comprises a square shaft and a hexagonal shaft; the torque transmission groove comprises a square groove and a hexagonal groove.
8. An insulated coupling for torque calibration as claimed in claim 1, wherein: the heat insulation materials of the heat insulation sleeve (5) and the heat insulation bolt group (6) are resin materials, including nylon and glass fiber reinforced plastics.
9. An insulated coupling for torque calibration as claimed in claim 1, 2, 3, 4, 5, 6, 7 or 8 wherein: when torque is transmitted, the torque is converted into pressure on the heat insulation groove (2) in the groove of the concave torsion transmission shaft (4) and transmitted to the combination disc (3), then the pressure is transmitted to the other heat insulation groove (2) through the combination disc (3) and then transmitted to the convex torsion transmission shaft (1), the pressure of the heat insulation groove (2) on the convex torsion transmission shaft (1) is converted into the torque, the heat insulation groove (2) is not subjected to shearing force and torsion, and the heat insulation groove (2) for transmitting the torque through positive pressure obtains a larger torque transmission range compared with a mode of transmitting the torque through the shearing force and the torsion of a heat insulation material; through above torque transmission mode, connect the bolt group that concave biography torsion shaft (4), combination dish (3), protruding biography torsion shaft (1) were used and do not receive shear stress, insulate against heat through thermal-insulated bolt for thermal-insulated best effect that reaches improves temperature control precision in the high low temperature torque measurement calibration.
10. An insulated coupling for torque calibration as claimed in claim 9, wherein: the specific heat insulation and torque transmission modes are as follows: the bolt group connecting the convex transmission torsion shaft (1) and the concave transmission torsion shaft (4) is only subjected to pretightening force, and the heat insulation bolt group (6) is adopted to isolate the heat transmission along the heat insulation bolt group (6); the heat insulation groove (2) isolates the direct contact between the convex torsion transmission shaft (1) and the combination disc (3), the heat is isolated from the transmission between the convex torsion transmission shaft (1) and the combination disc (3), the heat insulation groove (2) isolates the direct contact between the concave torsion transmission shaft (4) and the combination disc (3), and the heat is isolated from the transmission between the concave torsion transmission shaft (4) and the combination disc (3); arranging a heat insulation sleeve (5) outside the heat insulation bolt group (6), insulating the contact between the heat insulation bolt group (6) and the combination disc (3), and insulating the heat transfer between the heat insulation bolt group (6) and the combination disc (3); at the moment, under the condition of transmitting larger torque, the heat transmitted by the heat insulation coupling for torque calibration approaches to zero, namely, the heat insulation achieves the best effect, and the temperature control precision in high-temperature and low-temperature torque measurement calibration is improved.
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| CN202010677584.1A CN111649075B (en) | 2020-07-14 | 2020-07-14 | Heat insulation coupler for torque calibration |
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| CN202010677584.1A CN111649075B (en) | 2020-07-14 | 2020-07-14 | Heat insulation coupler for torque calibration |
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| CN111649075B true CN111649075B (en) | 2021-03-16 |
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